From 05de8fb29af618b0b3446fe81caca7402c6da666 Mon Sep 17 00:00:00 2001
From: Keisuke Kuroyanagi <ksk@google.com>
Date: Wed, 23 Sep 2015 13:34:17 -0700
Subject: [PATCH] Add tests: Paint#measureText for bidirectional text.

Bug: 22408712
Change-Id: Idff949fcabf360c994a0e3397cf6ec90d3a31162
---
 .../src/android/graphics/PaintTest.java       | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/graphics/tests/graphicstests/src/android/graphics/PaintTest.java b/graphics/tests/graphicstests/src/android/graphics/PaintTest.java
index b67aa7dca17b8..6763dd1970aea 100644
--- a/graphics/tests/graphicstests/src/android/graphics/PaintTest.java
+++ b/graphics/tests/graphicstests/src/android/graphics/PaintTest.java
@@ -162,4 +162,60 @@ public class PaintTest extends AndroidTestCase {
         } catch (IndexOutOfBoundsException e) {
         }
     }
+
+    public void testMeasureTextBidi() {
+        Paint p = new Paint();
+        {
+            String bidiText = "abc \u0644\u063A\u0629 def";
+            p.setBidiFlags(Paint.BIDI_LTR);
+            float width = p.measureText(bidiText, 0, 4);
+            p.setBidiFlags(Paint.BIDI_RTL);
+            width += p.measureText(bidiText, 4, 7);
+            p.setBidiFlags(Paint.BIDI_LTR);
+            width += p.measureText(bidiText, 7, bidiText.length());
+            assertEquals(width, p.measureText(bidiText), 1.0f);
+        }
+        {
+            String bidiText = "abc \u0644\u063A\u0629 def";
+            p.setBidiFlags(Paint.BIDI_DEFAULT_LTR);
+            float width = p.measureText(bidiText, 0, 4);
+            width += p.measureText(bidiText, 4, 7);
+            width += p.measureText(bidiText, 7, bidiText.length());
+            assertEquals(width, p.measureText(bidiText), 1.0f);
+        }
+        {
+            String bidiText = "abc \u0644\u063A\u0629 def";
+            p.setBidiFlags(Paint.BIDI_FORCE_LTR);
+            float width = p.measureText(bidiText, 0, 4);
+            width += p.measureText(bidiText, 4, 7);
+            width += p.measureText(bidiText, 7, bidiText.length());
+            assertEquals(width, p.measureText(bidiText), 1.0f);
+        }
+        {
+            String bidiText = "\u0644\u063A\u0629 abc \u0644\u063A\u0629";
+            p.setBidiFlags(Paint.BIDI_RTL);
+            float width = p.measureText(bidiText, 0, 4);
+            p.setBidiFlags(Paint.BIDI_LTR);
+            width += p.measureText(bidiText, 4, 7);
+            p.setBidiFlags(Paint.BIDI_RTL);
+            width += p.measureText(bidiText, 7, bidiText.length());
+            assertEquals(width, p.measureText(bidiText), 1.0f);
+        }
+        {
+            String bidiText = "\u0644\u063A\u0629 abc \u0644\u063A\u0629";
+            p.setBidiFlags(Paint.BIDI_DEFAULT_RTL);
+            float width = p.measureText(bidiText, 0, 4);
+            width += p.measureText(bidiText, 4, 7);
+            width += p.measureText(bidiText, 7, bidiText.length());
+            assertEquals(width, p.measureText(bidiText), 1.0f);
+        }
+        {
+            String bidiText = "\u0644\u063A\u0629 abc \u0644\u063A\u0629";
+            p.setBidiFlags(Paint.BIDI_FORCE_RTL);
+            float width = p.measureText(bidiText, 0, 4);
+            width += p.measureText(bidiText, 4, 7);
+            width += p.measureText(bidiText, 7, bidiText.length());
+            assertEquals(width, p.measureText(bidiText), 1.0f);
+        }
+    }
 }